3651331 has 4 divisors (see below), whose sum is σ = 3675664. Its totient is φ = 3627000.

The previous prime is 3651293. The next prime is 3651341. The reversal of 3651331 is 1331563.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1331563 = 757 ⋅1759.

It is a cyclic number.

It is not a de Polignac number, because 3651331 - 2¹³ = 3643139 is a prime.

It is a super-2 number, since 2×3651331² = 26664436143122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3651341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11940 + ... + 12241.

It is an arithmetic number, because the mean of its divisors is an integer number (918916).

Almost surely, 2^3651331 is an apocalyptic number.

3651331 is a deficient number, since it is larger than the sum of its proper divisors (24333).

3651331 is a wasteful number, since it uses less digits than its factorization.

3651331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24332.

The product of its digits is 810, while the sum is 22.

The square root of 3651331 is about 1910.8456243245. The cubic root of 3651331 is about 153.9868853733.

Adding to 3651331 its reverse (1331563), we get a palindrome (4982894).

The spelling of 3651331 in words is "three million, six hundred fifty-one thousand, three hundred thirty-one".